| 纳米(CeO_2)_(0.86)(Sm_2O_3)_(0.14)的形貌控制与表征 |
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| 引用本文： | 刘荣梅,马桂林,丁玉洁,卢小军.纳米(CeO_2)_(0.86)(Sm_2O_3)_(0.14)的形貌控制与表征[J].安徽工程科技学院学报,2009,24(1). |
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| 作者姓名： | 刘荣梅 马桂林 丁玉洁 卢小军 |
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| 作者单位： | 1. 安徽工程科技学院生化工程系,安徽芜湖,241000
2. 苏州大学化学化工学院,江苏苏州,215006 |
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| 摘 要： | 以Ce(NO3)3·6H2O和(NH4)2CO3为沉淀源,搀杂稀土氧化物Sm2O2,利用柠檬酸作为络合剂和分散剂,制备出纳米(CeO2)0.86(Sm2O3)0.14.并采用TEM、XRD等方法对其热分解所得纳米(CeO2)0.86(Sm2O3)0.14的形貌及结晶性等进行了表征.结果表明:随着柠檬酸加入量的增加,焙烧生成的纳米(CeO2)0.86 (Sm2O3)0.14颗粒的形貌从纳米线向类球形颗粒变化,所得(CeO2)0.86(Sm2O3)0.14为立方萤石结构,且随焙烧温度的提高,晶化程度增大.
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| 关 键 词： | 共沉淀 柠檬酸 稀土 |
Morphology control and characterization of nanocrystalline (CeO_2)_(0.86)(Sm_2O_3)_(0.14) |
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| LIU Rong-mei,MA Gui-lin,DING Yu-jie,LU Xiao-jun.Morphology control and characterization of nanocrystalline (CeO_2)_(0.86)(Sm_2O_3)_(0.14)[J].Journal of Anhui University of Technology and Science,2009,24(1). |
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| Authors: | LIU Rong-mei MA Gui-lin DING Yu-jie LU Xiao-jun |
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| Institution: | 1.Dept.of Bioch.and Engn.;Anhui University of Technology and Science;Wuhu 241000;China;2.Sch.of Chem.& Chem.Engn.;Suzhou University;Suzhou 215006;China |
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| Abstract: | Nanocrystalline(CeO2)0.86(Sm2O3)0.14 was prepared by means of coprecipitation with cerium nitrate as the starting salts,doping Sm2O3,ammonium carbonate as the precipitator and citric acid as the complexing agent and dispersant.Calcined powders was characterized using TEM and XRD.The results indicated that the morphology of calcined powders changed from nanowires to spherical particles with the increase of citric acid;the as-prepared(CeO2)0.86(Sm2O3)0.14 had the cubic crystal structure of fluorite,and the cr... |
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| Keywords: | (CeO2)0 86(Sm2O3)0 14 |
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